Telescoping mechanism



No. 770,550. PATENTED SEPT. 20, 1904.

H. B. BAYLY. TELESGOPING MECHANISM.

APPLICATION FILED SEPT. 8, 1903.

NO MODEL. 2 SHEETS-SHEET l.

No. 770,550. PATENTED SEPT. 20, 1904. H. E. BAYLY. TLELESCOPING-MECHANISM.

APPLICATION FILED SEPT. 8, 1903.

N0 MODEL. 2 SHEETS-SHEET Z.

EW/humus UNITED STATES Patented September 20, 1904.

PATENT OEEIcE.

HARRY E. BAYLY, OF INDIANAPOLIS, INDIANA, ASSIGNOR OF ONE-HALF TOWILLIAM S. HOLOOMBE, OF BEDFORD, INDIANA.

TELESCOPING MECHANISM.

SPECIFICATION forming part of Letters Patent No. 770,550, datedSeptember-20, 1904.

Application filed September 8, 1903. $erial No. 172,228. (No model.)

To all whom it may concern:

Be it known that I, HARRY E. BAYLY, of Indianapolis, county of Marion,and State of Indiana, have invented a certain new and useful TelescopingMechanism; and I do hereby declare that the following is a full, clear,and exact description thereof, reference being had to the accompanyingdrawings, in which like numerals refer to like parts.

The object of this invention is to provide means for telescoping each ofa plurality of members with an equal and simultaneous movement. Forexample, the invention may be applied and I have herein shown it appliedto a pneumatic straw-stacker consisting of three tubes, one stationaryand the other two telescoping on the stationary tube. With mytelescoping mechanism connected with said sections each of the movablesections will be moved simultaneously and to an equal extent.

The full nature of this invention will be understood from theaccompanying drawings and the following description and claims.

In the drawings, Figure 1 is an elevation of the right-hand side of apneumatic straws stacker tube with my telescoping mechanism thereon, thetube being shown closed. Fig. 2 is the same with the tube extended. Fig.3 is a transverse section on the line 3 3 of Fig. 1. Fig. 4 is a centralvertical section through the upper part of the tube-sections and thetelescoping mechanism, parts in side elevation and parts broken away.

The pneumatic tube herein shown consists of a stationary section 10,amiddle movable section 11, and an extreme or end movable section 12. Thesection 11 telescopes on the section 10, and the section 12 telescopeson the section 11.

The telescoping mechanism consists in the form shown herein of a smalltube 15, parallel with the members 10, 11, and 12'of the main tube andmounted above them. to serve as means for guiding the telescopingmovement of the movable sections 11 and 12. Said tube 15 is securedstationary at one end to a'bracket 16, which is fastened on thestationary section 10. Its outer end is open, and it extends as far orslightly farther than the limit of movement of the inner end of themiddle movable section 11. A second small tube 17 telescopes within thetube 15, as seen in Fig. 4, and is closed at its outer end. At its innerend it is secured to themiddle section 11 by a connecting-bracket 18,that extends through a vertical slot in the lower side of the small tube15. A short sliding tube 20 slides longitudinally within the inner tube17 and is connected with the end of the movable section 12 by thebracket 21, which extends through the longitudinal slots in the lowersides of both the tubes 15 and 17.

The middle section 11 is moved by the sprocket-chain 23, operated by thecrank 24, mounted on the bracket 16 on the stationary section 10. Theother end of the sprocketchain runs over a sprocket-wheel 25, mounted onone side of the small tube 15, and the middle section 11 is secured tosaid chain between its ends by the bracket 26. When the chain isoperated, the section'll will be telescoped to and fro.

In order that the section 12 will move at the same time and away fromthe section 11 with the same speed that the section 11 moves away fromthe section 10, I have provided the following mechanism: The pulley ismounted within the tube 17 near its extreme end, and another pulley, 31,is mounted in the other end of the same tube. Acable or cord 32 extendsabout said pulleys and is secured on one side at 33 to the bracket 21from the movable section 12, and at-the other side it is also held insome stationary way, the means shown beingthe end of a very small tube34, through which the cable or cord extends. The small tube 34 issecured within the stationary tube 15, and the cord or cable 32 passesthrough said small tube to the inner end of the stationary tube, whereit is tied. The means described successfully hold the cable at the outerend of the tube 34 and is a convenient means for use when the smalltubes 15 and 17 are used. The purpose is that the cable or cord 32 shallbe held stationary ata point between the limit of movement of thepulleys 30 and 31. It is obvious that with the cable thus held andmounted the section 12 will be moved from section twice as fast as thesection 11, and with said sections of equal length they will reach theirlimit of movement at the same time whether they be moved outward orinward.

I do not Wish to limit the invention to tubular guides, like 15 and 17,or to any particular means for holding one side of the cable 32stationary, as those parts can readily be modified. What is necessary tothe operation of the device according to the invention herein set forthis means for longitudinally guiding the sections having some telescopingguide, like 17 that moves with the middle section, and having on itpulleys, like 30 and 31, and a cable, like 32, and having said cablefastened on one side to the movable section 12 and 'on the other side tothe stationary means between the'pulleys 30 and 31; nor do I wish to belimited to a construction with only two movable tubes, as the numbermight be increased by merely duplicating the parts; nor do I wish to belimited to telescoping tubes, as extension-laddersor similarconstructions might be extended by the same telescoping mechanism aswould telescope tubes. By telescoping I mean in this specification andthe claims the movement of two or more members either in each, as incase of a telescope, or on each other, as in case of an extension-ladder or the like. It is seen that'the outer member in the maintube moves at the same time and to the same extent as the inner member,and the movement of said outer member is automatic.

What I claim as myinvention, and desire to secure by Letters Patent, is-

1. The combination with three telescoping members, one of which isstationary and the others movable, of means carried by the middle memberfor guiding the movement of said movable members and distinct from themovable members, means for moving the middle member, and meanscontrolled by the movement of the middle member for telescoping theouter member simultaneously with the movement of said middle member.

2. The combination with three telescoping members, one of which isstationary and the others movable, of a sliding means for guiding saidmembers that is secured to the middle member, a pulley mounted near eachend of said sliding guide, a cable extending about said pulleys that ison one side secured stationary and at the other side is secured to theouter movable member, and means for moving the middle member.

3. The combination with three members, one of which is stationary andthe other two telescoping, of a parallel guide secured to saidstationary member for guiding the movement of the middle member, a guideslidingly mounted in connection with said stationary guide for guidingthe outer movable member and which is connected with the middle member,means mounted in connection with said stationary guide for moving saidmiddle member, a pulley near each end of the movable guide, and a cableextending about said pulleys and secured stationary at one side and atthe other side secured to said outer movable member.

4. The combination with a stationary member and two members telescopingthereon, of a parallel guiding-tube mounted on said stationary memberwith a longitudinal slot along the side thereof and adjacent saidtelescoping members, a tube for guiding the movement of said outermember that telescopes within said stationary guiding-tube and has alongitudinal slot to register with the slot in the stationaryguiding-tube and secured to said outer member, a bracket extending fromthe outer movable member through the slots in said tubular guides andslidable within said movable guides, a pulley mounted within saidmovable guiding-tube near each end, a small tube secured within saidstationary guiding-tube and extending through it and the movableguiding-tube to a point between the limits of movement of said pulleys,and a cable secured Within said small tube and extending through it andabout said pulleys and secured to the bracket extending from said outermovable member,substantiall y as shown and described.

In witness whereof I have hereunto aflixed my signature in the presenceof the witnesses herein named.

HARRY E. BAYLY. Witnesses:

GRACE MURPHY, NELLIE ALLEMONG.

